ECU CAN messages
ECU CAN messages
I am currently working on this and have managed to decode some of the information, but it could be useful to collaborate if somebody has info.
In any case i will post information when i have checked it.
For info i am making a display that will show some of the information that would have been on the dash, e.g Glow light, Engine check light, rpm, etc... Possibly read PID codes and do some other things also. This display will also read the 320CDi oil level, temp, condition sensor.
Has anyone done any work or have any information on the CAN messages sent from the Bosch ECU?
I am currently working on this and have managed to decode some of the information, but it could be useful to collaborate if somebody has info.
In any case i will post information when i have checked it.
For info i am making a display that will show some of the information that would have been on the dash, e.g Glow light, Engine check light, rpm, etc... Possibly read PID codes and do some other things also. This display will also read the 320CDi oil level, temp, condition sensor.
whipplem104
08-26-2015, 09:11 AM #3I work with this stuff. I really only work with the broadcast messages for the drivetrain functionality. So rpm, torque, tps, etc. Is there something specific that you want to know? I may have the info. There are also a few different generations of this info so what vehicle are you looking at?
210 has tps, byte 3. 308 is rpm, bytes 1&2, and 608 has coolant temp, byte 4 or 5, I do not remember. there might be a 310h with torque, newer cars have 312h. Which is normally the 1&2 or 2&3rd bytes.
These are really the only ones I focus on terribly. 200h and 208h have wheel speed. 208h is rear wheel. All last 4 bytes. left and right accordingly.
Conversion factors are pretty straight forward. TPS is 0-255 for 0-100% throttle. RPM is a straight conversion. wheel speed is a straight conversion but you will have to calculate vehicle speed from tire size.
Torque is .25 decimal per nm. 0 torque is 2002 decimal. Coolant temp is -50 if I remember correctly.
I do not have any status bits like check engine ight or glow.
Current gear is in 218h and 418h. 418h is for i/c display and traction. Pretty easy to see which ones. 418h has trans temp and w/s modes. or driving mode status.
If you are having any troubles finding something let me know I can take a look or go back through some old notes.
whipplem104
08-27-2015, 12:31 PM #5I would have to double check some things to be sure. I mostly work with newer cars but your ids your looking for are 210h and 308h and 608h
210 has tps, byte 3. 308 is rpm, bytes 1&2, and 608 has coolant temp, byte 4 or 5, I do not remember. there might be a 310h with torque, newer cars have 312h. Which is normally the 1&2 or 2&3rd bytes.
These are really the only ones I focus on terribly. 200h and 208h have wheel speed. 208h is rear wheel. All last 4 bytes. left and right accordingly.
Conversion factors are pretty straight forward. TPS is 0-255 for 0-100% throttle. RPM is a straight conversion. wheel speed is a straight conversion but you will have to calculate vehicle speed from tire size.
Torque is .25 decimal per nm. 0 torque is 2002 decimal. Coolant temp is -50 if I remember correctly.
I do not have any status bits like check engine ight or glow.
Current gear is in 218h and 418h. 418h is for i/c display and traction. Pretty easy to see which ones. 418h has trans temp and w/s modes. or driving mode status.
If you are having any troubles finding something let me know I can take a look or go back through some old notes.
I wont have any messages about wheel speed or gears, as i'm using the engine in a different car and there are no other boxes connected.
thanks
thanks thats really helpful. I dont have my data in front of me to compare. I think i have found glow light, but ECL is harder as its not easy to see it change.
I wont have any messages about wheel speed or gears, as i'm using the engine in a different car and there are no other boxes connected.
thanks
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